Reservoir Geology & Sedimentology

Reservoir Geology at PetroStrat provides an integrated set of services that aim to characterise the rocks central to our clients’ projects.  We examine their physical and chemical properties and their spatial distribution, integrating this with a wide variety of other data types to assess the rocks’ suitability for the emerging challenges of the energy transition and natural resource sectors.  By analysing key characteristics, such as mineralogy, sedimentological features, texture, porosity, and permeability, we can improve our understanding of potential fluid flow through the rocks. 

Timely, effective, client-driven deliverables 

Proactive knowledge transfer

Industry-leading, global expertise  

Customised, integrated projects tailored to client need

Customised range of analytical techniques

The Reservoir Geology team has a wealth of industry-leading expertise to address and solve our clients’ challenges.  We strive to provide a bespoke range of analytical techniques to get to grip with the uncertainties faced, both at wellsite and in the office.  We specialise in our integration of data, including biostratigraphy, sedimentology and chemical stratigraphy stratigraphy (via our joint venture, Future Geoscience) providing unrivalled insight into factors controlling risk and potential uncertainties, whatever the sector.  Our client-centred approach provides timely and effective results, enabling informed decision-making to take place concerning the economic viability of our clients’ natural resources. 

No two studies are the same, so we offer a bespoke collection of services to provide a tailored solution for each client.

Our Key Reservoir Geology & Sedimentology Services

Click below to learn about our key services, that may be included in a PetroStrat reservoir geology study.

• Data Capture
• Correlation & Evaluation
• Integrated
  Workflows
• Petrographic
  Analyses
• Petrophysical
  Analyses
• Wireline &
  Image Log Analyses

• Core description and review – to realise the full value of your cored asset and calibrate and truth your digital datasets.
• Detailed graphical logging at a scale suitable for individual projects from high-resolution 1:20 or 1:50 descriptions, to 1:200 or tabulated core reviews.
• Cuttings analysis
  • Lithological description of cuttings samples

• Depositional environment interpretation
  • Providing geometries and spatial distributions to resource rocks
• Correlation and palaeogeographic mapping
  • Allowing interpolation between reference points and enhancing understanding of volumetrics

• Integrated biostratigraphy
  • Expertise in combining different data sets, including age, strata and facies from biostratigraphic analyses.
• Integrated chemical stratigraphy (via Joint Venture)
  • Combining different XRF and other elemental data from chemical stratigraphy to enhance mineralogical understanding and correlative zonation schemes. 

• Quantitative petrography
  • Detailed modal-counts of detrital and authigenic mineralogy and porosity type to allow the interpretation of diagenetic histories and impacts on reservoir quality. 
• SEM, QEMSCAN®, XRD, BSE, CL
  • Additional petrographic techniques integrated with point-counted modal data to enhance the understanding of pore geometries and relationships between detrital and authigenic minerals.
• Porosity history and reservoir quality modelling
  • Evaluation of the diagenetic influences on preservation of pore space and connectivity and how it has changed through time. 

• Image log & wireline log analysis
  • Structural and sedimentological analyses of a wide range of image logs and interpretation of wireline log suites for population of uncored intervals. 
• LogsStrat analysis
  • In depth evaluation of spectral gamma data to allow enhanced resolution of correlatable units in strata where limited breakdown of zones can be made. 

• Petrophysical interpretation
  • Processing composite datasets from raw data and conditioning data to remove any spurious data caused by tool artefacts, casing or severe washouts.Using routine core analysis (RCA), special core analysis (SCAL), XRD, QEMSCAN®, fluid analysis etc to generate and/or calibrate the appropriate petrophysical models.
• Formation Pressure Analysis
  • QC individual pre-test data, flag spurious tests (lost seal, supercharged etc.)
  • Determine fluid contact points, gradients, and fluid density.
• Porosity/Permeability analysis
  • Evaluate available routine core analysis (RCA) and generate an initial set of porosity-permeability relationships
• Saturation modelling, reservoir rock typing and electrofacies
  • Rock type characterisation based on RCA/SCAL data, relative permeability and capillary pressure will be looked at with emphasis in determining pore types, capillary modelling and saturation height modelling

Data Capture

• Core description and review – to realise the full value of your cored asset and calibrate and truth your digital datasets.
• Detailed graphical logging at a scale suitable for individual projects from high-resolution 1:20 or 1:50 descriptions, to 1:200 or tabulated core reviews.
• Cuttings analysis
  • Lithological description of cuttings samples

Correlation & Evaluation

• Depositional environment interpretation
  • Providing geometries and spatial distributions to resource rocks
• Correlation and palaeogeographic mapping
  • Allowing interpolation between reference points and enhancing understanding of volumetrics

Integrated Workflows

• Integrated biostratigraphy
  • Expertise in combining different data sets, including age, strata and facies from biostratigraphic analyses.
• Integrated chemical stratigraphy (via Joint Venture)
  • Combining different XRF and other elemental data from chemical stratigraphy to enhance mineralogical understanding and correlative zonation schemes. 

Petrographic Analyses

• Quantitative petrography
  • Detailed modal-counts of detrital and authigenic mineralogy and porosity type to allow the interpretation of diagenetic histories and impacts on reservoir quality. 
• SEM, QEMSCAN®, XRD, BSE, CL
  • Additional petrographic techniques integrated with point-counted modal data to enhance the understanding of pore geometries and relationships between detrital and authigenic minerals.
• Porosity history and reservoir quality modelling
  • Evaluation of the diagenetic influences on preservation of pore space and connectivity and how it has changed through time. 

Petrophysical Analyses

• Petrophysical interpretation
  • Processing composite datasets from raw data and conditioning data to remove any spurious data caused by tool artefacts, casing or severe washouts.Using routine core analysis (RCA), special core analysis (SCAL), XRD, QEMSCAN®, fluid analysis etc to generate and/or calibrate the appropriate petrophysical models.
• Formation Pressure Analysis
  • QC individual pre-test data, flag spurious tests (lost seal, supercharged etc.)
  • Determine fluid contact points, gradients, and fluid density.
• Porosity/Permeability analysis
  • Evaluate available routine core analysis (RCA) and generate an initial set of porosity-permeability relationships
• Saturation modelling, reservoir rock typing and electrofacies
  • Rock type characterisation based on RCA/SCAL data, relative permeability and capillary pressure will be looked at with emphasis in determining pore types, capillary modelling and saturation height modelling

Wireline & Image Log Analyses

• Image log & wireline log analysis
  • Structural and sedimentological analyses of a wide range of image logs and interpretation of wireline log suites for population of uncored intervals. 
• LogsStrat analysis
  • In depth evaluation of spectral gamma data to allow enhanced resolution of correlatable units in strata where limited breakdown of zones can be made. 

Applications

Our Reservoir Geology team are adaptable and embrace the challenge of applying their expertise to a wide range of applications.  Whether you are in need of seal analysis for your CCS project, interpretation of petrographic data to understand the impact of diagenesis on your gas reservoir, or evaluation of the depositional setting of your sediment-hosted mineral deposit, our geologists will adapt the workflow specifically for your project.